Intermediate-mass evolved star winds: an observer’s perspective

Jacco van LoonKeele University

Kalirai et al. (2008)

Kalirai et al. (2009)

Kalirai et al. (2008)

Javadi et al. (2011)

(from Marigo et al. 2008)

AGB

RSG

Super - AGB

Sloan et al. (2009)

Sculptor

Marigo et al. (2008)

Ferrarotti & Gail (2006)

Ferrarotti & Gail (2006)

Ferrarotti & Gail (2006)

Wood et al. (1992)

mass loss

Nguyen et al. (2007)

Croat et al. (2005)

Vollmer et al. (2009)

200 nm

Fe

van Loon et al. (2008)

van Loon et al. (2005)

dust formation radius

maser

Marshall et al. (2004)

Wood et al. (1992)

Marshall et al. (2004)

Atacama Large (sub)Millimeter Array

Australian SKA Pathfinder

CW Leo = IRC +10 216

Leão et al.

Cat’s Eye Nebula

Mira

ω Centauri

Ercole et al. (2012)

2nd generation

pristine gas

1st generation winds

M 4

Ercole et al. (2012)

2nd generation

pristine gas

1st generation winds

NGC 2808

McDonald & van Loon (2007)

McDonald et al. (2009)

Origlia et al.

Reimers

dust

McDonald et al. (2010, 2011)

iron

Sloan et al. (2010)

LMC

SMC

IRAS

Spitzer

van Loon (2006)

Boyer et al. (2012)

Boyer et al. (2012)

Boyer et al. (2012)

Bonanos et al.

(2010)

M 33

2 micron

Spitzer

Javadi et al. (2011)

Javadi et al. (2011)

(from Marigo et al. 2008)

RSG

super-AGB

AGB

AGB super-AGB / RSGRGB

Javadi et al. (2012)

Action points

• Wind kinematics (stellar parameters)• Dust-to-gas ratios (stellar parameters)• Mass-loss rates from not-very-dusty stars• Detailed case studies confronting models…• …and population studies confronting models• Interaction with the ISM and/or companions• Super-AGB stars

Marshall et al. (2004)

van Loon, Marshall & Zijlstra

(2010)

Bonanos et al.

(2010)